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12 men complete a job in 9 days. How many men working t the same...

Mathematics
JAMB 1979

12 men complete a job in 9 days. How many men working t the same rate would be required to complete the job in 6 days?

  • A. 24
  • B. 18
  • C. 12
  • D. 9
  • E. 8
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Correct Answer: Option B
Explanation

12 men in 9 days,

1 day in \(12 \times 9\) men

In 6 days we have \(\frac{12 \times 9}{6}\) men

= \(\frac{108}{6}\)

= 18 men

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